Podcasts for word nerds
Slate shares some amateur podcasts appropriate for word lovers:
Podictionary is an audio word of the day (iTunes feed).
The Word Nerds looks especially promising. The weekly episodes are about 30 minutes long and have such intriguing titles as "Games Nerds Play," "Insidious Idioms" and "Our Linguistic Pet Peeves" (iTunes feed).
And while you're getting hooked on podcasts, may I suggest On the Media's? (The programs are available Fridays, and transcripts are available the following Tuesday, if you're not into the whole podcast thing.)